This is an authentic ROBERTO COIN 18K White Gold Diamond Princess Butterfly Pendant Necklace. The necklace is crafted of 18 karat white gold and features a butterfly motif pendant pave-set with round brilliant cut diamonds, approximately .25 total carat weight, and the signature synthetic ruby on the chain tag. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.